Looking at this tube, it's mu is 78, rp is 5400R. It would be a great candidate for a preamp using a trafo, say with 12:1 step down, giving overall gain around 6, 15.5dB. This should give a Zout around 40R, which would give it terrific drive. The only downside would be overload margin, probably not much better than 3Vpp.
Has anyone used this tube, could I ask your experience of the best operating voltages and currents for nicest sound?
Cheers,
Hugh
Has anyone used this tube, could I ask your experience of the best operating voltages and currents for nicest sound?
Cheers,
Hugh
Gary Pimm uses them in his phono stage. 2,5mA or current running through it.
http://www.pacifier.com/~gpimm/phono.htm
http://www.pacifier.com/~gpimm/phono.htm
Hugh,
I just put together a little SET amp using the 6GK5 to drive a 1626.
The 6GK5 is battery biased (Nimh) at about 1.3vg/6ma and the 1626 @ 23v/23ma.
I needed the gain up front because my signal source is only 200mv (old computer CD drive line out)
So far I'm liking it a lot.
robert
I just put together a little SET amp using the 6GK5 to drive a 1626.
The 6GK5 is battery biased (Nimh) at about 1.3vg/6ma and the 1626 @ 23v/23ma.
I needed the gain up front because my signal source is only 200mv (old computer CD drive line out)
So far I'm liking it a lot.
robert
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Tubes / Valves
- Operating point for 6GK5